I have been utilizing Mustad hooks for approximately 20 years, and am going to place an order for some of their Signature Hooks. However, their Classic 9671 Hook is 2X long with the Signature R73 equivalent being 3X long. Also, their Classic 9672 is 3X long with the Signature R74 being 4X. If the 9672 wasn't a true 3X then why would they replace it with a hook that is supposed to be a proportional 4X instead of a more accurate 3X? Is it recommended to dismiss attempting to reference the new to the old versions? Thanks.

Ron